Donegan may refer to:
- Donegan (surname), a surname originating from Ireland
- Barry Donegan (born 1978), American singer and songwriter
- Batt Donegan (1910–1978), former Irish politician
- Dan Donegan (born 1968), American musician
- Dorothy Donegan (1922–1998), jazz pianist
- Edward Donegan, American bootlegger
- Horace William Baden Donegan (1900–1991), English prelate
- John Donegan, medieval Manx prelate
- Lawrence Donegan (born 1961), musician and journalist
- Lonnie Donegan (1931–2002), skiffle musician
- Mike "The Duke" Donegan, broadcast and legal specialist
- Paddy Donegan (1923–2000), former Irish politician
- Sir William Dongan, 4th Baronet, created Earl of Limerick
- Thomas Dongan, 2nd Earl of Limerick, governor of the Province of New York
- Greg Donegan, a pen name of Bob Mayer
Read more about Donegan: Places